Trifluorosilane is the
chemical compound
A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) containing atoms from more than one chemical element held together by chemical bonds. A molecule consisting of atoms of only one element ...
with the formula
F3 H Si. At standard temperature and pressure, trifluorosilane is a colorless gas. Note that the
free radical
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F3 Si is often also referred to as trifluorosilane, although more properly referred to as trifluorosilyl.
Preparation
Trifluorosilane has been purified and separated by low-temperature high-vacuum distillation. One preparation method involves products of the reaction between SbF
3 and HSiCl
3. HSiCl
3 is obtained by copper catalyzed reaction between HCl and Silicon at 200-400 °C.
Formation has also been reported in certain etching operations of silicon.
Properties
The electric dipole moment of trifluorosilane is 1.26
debye
The debye ( , ; symbol: D) is a CGS unit (a non- SI metric unit) of electric dipole momentTwo equal and opposite charges separated by some distance constitute an electric dipole. This dipole possesses an electric dipole moment whose value is give ...
. The length of the silicon to fluorine bond is 1.555 Å, Si-H length is 1.55 Å, and ∠FSiF is 110°.
References
Further reading
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{{silicon compounds
Fluorides
Nonmetal halides
Silanes